A must for motorcycle owner. Has a quick-disconnect harness with right connector. Hook the harness up to one. No need to take the battery out again to charge it. For 6V and 12V batteries. 1A trickle charge rate that charges in 2 to 12 hours. Reverse hook-up protection. Quick disconnect harness. Snap either connector into place in seconds. Use the 50A clamps or permanently attach the ring connectors. Great for hard-to-reach motorcycles batteries. Reverse hook-up protection.